What are the precautions when taking cromolyn sodium (Nasalcrom)?

Before using this medication, tell your doctor or pharmacist if you are allergic to cromolyn; or if you have any other allergies. This product may contain inactive ingredients (such as preservatives like benzalkonium chloride), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

If you have any of the following health problems, consult your doctor or pharmacist before using this product: asthma, growths in the nose (nasal polyps).

If you are using this medication for self-treatment, tell your doctor before using this medication if you have any of the following symptoms: fever, yellow/green/discolored fluid from the nose, sinus pain, wheezing.

During pregnancy, this medication should be used only when clearly needed....